• 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 1 - XRmarine
  • 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 2 - XRmarine
  • 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 3 - XRmarine
  • 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 4 - XRmarine
  • 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 5 - XRmarine
  • 0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrud... - 6 - XRmarine
1 6

0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrude Outboard 0306204

0329103 Cylinder Head Gasket 5 5.5 6 Hp Johnson / Evinrude Outboard 0306204

$24.27 USD
$24.27 USD
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Cylinder-Head Gasket

Johnson / Evinrude / OMC 5-6 HP 1959-1979 | OEM Quality

Package Included
1 × Cylinder-head gasket
OEM Part Numbers
306204, 329103, 777397, 33830, 18-2961
HP Range
5 / 5.5 / 6 HP
Years
1959 – 1979

Engine Fitment

⚠️ Important Notice

This guide is to be used as a reference only. You must verify fitment using your engine model or serial number before purchase.

5 HP 1965-68 5.5 HP 1959-64 6 HP 1965-79
  • Johnson/Evinrude/OMC: 306204, 329103, 777397
  • GLM: 33830
  • Sierra: 18-2961

Installation Overview

  1. Remove cylinder head cover and drain coolant (if applicable).
  2. Loosen head bolts in reverse order; lift head straight up.
  3. Clean both mating surfaces completely—no old gasket material.
  4. Install new gasket dry (no sealant) and position head evenly.
  5. Torque head bolts in specified sequence to factory values.
  6. Reinstall components, refill coolant, start and check for leaks.

Professional Support

Need Help Confirming Fitment?

Send us a quick message with:

  • Engine brand & horsepower (e.g., 1972 Evinrude 6 HP)
  • Model/serial number (critical for verification)
  • Year of manufacture

We’ll double-check compatibility for you—free of charge.

Before You Buy

Please verify your engine model and serial number before purchase. Contact us for fitment confirmation. Free worldwide shipping from XRmarine.

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Before You Buy

Frequently Asked Questions

What is your refund policy?

We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.

See our full Refund Policy for complete details.

How does shipping work?

Free international shipping on every order — no minimums. We ship from our global warehouse network (US, Germany, UK, Australia). Typical delivery: 10-20 business days. Tracking included.

See our full Shipping Policy.

How do you keep prices fair?

We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.

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